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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">add_noise_distribution</span><span data-if="c" style="display:none;">T_add_noise_distribution</span><span data-if="cpp" style="display:none;">AddNoiseDistribution</span><span data-if="dotnet" style="display:none;">AddNoiseDistribution</span><span data-if="python" style="display:none;">add_noise_distribution</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">add_noise_distribution</span><span data-if="c" style="display:none;">T_add_noise_distribution</span><span data-if="cpp" style="display:none;">AddNoiseDistribution</span><span data-if="dotnet" style="display:none;">AddNoiseDistribution</span><span data-if="python" style="display:none;">add_noise_distribution</span></code> — 添加噪声到图像。</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>add_noise_distribution</b>(<a href="#Image"><i>Image</i></a> : <a href="#ImageNoise"><i>ImageNoise</i></a> : <a href="#Distribution"><i>Distribution</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_add_noise_distribution</b>(const Hobject <a href="#Image"><i>Image</i></a>, Hobject* <a href="#ImageNoise"><i>ImageNoise</i></a>, const Htuple <a href="#Distribution"><i>Distribution</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>AddNoiseDistribution</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, HObject* <a href="#ImageNoise"><i>ImageNoise</i></a>, const HTuple&amp; <a href="#Distribution"><i>Distribution</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>AddNoiseDistribution</b>(const HTuple&amp; <a href="#Distribution"><i>Distribution</i></a>) const</code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>AddNoiseDistribution</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, out <a href="HObject.html">HObject</a> <a href="#ImageNoise"><i>imageNoise</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Distribution"><i>distribution</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>.<b>AddNoiseDistribution</b>(<a href="HTuple.html">HTuple</a> <a href="#Distribution"><i>distribution</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>add_noise_distribution</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#Distribution"><i>distribution</i></a>: Sequence[float]) -&gt; HObject</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">add_noise_distribution</span><span data-if="c" style="display:none">add_noise_distribution</span><span data-if="cpp" style="display:none">AddNoiseDistribution</span><span data-if="com" style="display:none">AddNoiseDistribution</span><span data-if="dotnet" style="display:none">AddNoiseDistribution</span><span data-if="python" style="display:none">add_noise_distribution</span></code> adds noise distributed according to
<a href="#Distribution"><i><code><span data-if="hdevelop" style="display:inline">Distribution</span><span data-if="c" style="display:none">Distribution</span><span data-if="cpp" style="display:none">Distribution</span><span data-if="com" style="display:none">Distribution</span><span data-if="dotnet" style="display:none">distribution</span><span data-if="python" style="display:none">distribution</span></code></i></a> to the <a href="#Image"><i><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></i></a>.  The resulting gray values are
clipped to the range of the corresponding pixel type.
</p>
<p>The <a href="#Distribution"><i><code><span data-if="hdevelop" style="display:inline">Distribution</span><span data-if="c" style="display:none">Distribution</span><span data-if="cpp" style="display:none">Distribution</span><span data-if="com" style="display:none">Distribution</span><span data-if="dotnet" style="display:none">distribution</span><span data-if="python" style="display:none">distribution</span></code></i></a> is stored in a tuple of length 513. The individual
values of this tuple define the frequency of noise with a specific amplitude
defined by the position within the tuple.  The central value, i.e., the
value at the position 256 in the tuple defines the frequency of pixels that
are not changed. The value at the position 255 defines the frequency of
pixels for which the grayvalue is decreased by 1. The value at the position
254 defines the respective frequency for a grayvalue decrease of 2, and so
on.  Analogously, the value at position 257 defines the frequency of pixels
for which the grayvalue is increased by 1.
</p>
<p>The <a href="#Distribution"><i><code><span data-if="hdevelop" style="display:inline">Distribution</span><span data-if="c" style="display:none">Distribution</span><span data-if="cpp" style="display:none">Distribution</span><span data-if="com" style="display:none">Distribution</span><span data-if="dotnet" style="display:none">distribution</span><span data-if="python" style="display:none">distribution</span></code></i></a> represents salt and pepper noise if at most one
value at a position smaller than 256 is not equal to zero and at most one
value at a position larger than 256 is not equal to zero. In case of salt
and pepper noise, the added noisy pixels are set to the minimum (pepper) and
maximum (salt) values that can be represented by <a href="#ImageNoise"><i><code><span data-if="hdevelop" style="display:inline">ImageNoise</span><span data-if="c" style="display:none">ImageNoise</span><span data-if="cpp" style="display:none">ImageNoise</span><span data-if="com" style="display:none">ImageNoise</span><span data-if="dotnet" style="display:none">imageNoise</span><span data-if="python" style="display:none">image_noise</span></code></i></a> if the
amount of pepper is indicated by the value at position 0 and the amount of
salt is indicated by the value at position 512 in the tuple.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  
    <li>在元组级别自动并行化。</li>
    <li>在图像通道级别自动并行化。</li>
  
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / int2)</span>
</div>
<p class="pardesc">Input image.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ImageNoise" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ImageNoise</span><span data-if="c" style="display:none">ImageNoise</span><span data-if="cpp" style="display:none">ImageNoise</span><span data-if="com" style="display:none">ImageNoise</span><span data-if="dotnet" style="display:none">imageNoise</span><span data-if="python" style="display:none">image_noise</span></code></b> (output_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject *</span> (byte / int2)</span>
</div>
<p class="pardesc">Noisy image.</p>
<p class="pardesc"><span class="parcat">Number of elements:
      </span>ImageNoise == Image</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Distribution" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Distribution</span><span data-if="c" style="display:none">Distribution</span><span data-if="cpp" style="display:none">Distribution</span><span data-if="com" style="display:none">Distribution</span><span data-if="dotnet" style="display:none">distribution</span><span data-if="python" style="display:none">distribution</span></code></b> (input_control)  </span><span>distribution.values-array <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Sequence[float]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real)</span><span data-if="dotnet" style="display:none"> (<i>double</i>)</span><span data-if="cpp" style="display:none"> (<i>double</i>)</span><span data-if="c" style="display:none"> (<i>double</i>)</span></span>
</div>
<p class="pardesc">Noise distribution.</p>
<p class="pardesc"><span class="parcat">Number of elements:
      </span>513</p>
</div>
<div data-if="hdevelop" style="display:inline">
<h2 id="sec_example_hdevelop">例程 (HDevelop)</h2>
<pre class="example">
read_image(Image,'mreut')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
</pre>
</div>
<div data-if="c" style="display:none">
<h2 id="sec_example_c">例程 (C)</h2>
<pre class="example">
read_image(&amp;Image,"fabrik");
disp_image(Image,WindowHandle);
set_d(PerSalt,30.0,0);
set_d(PerPepper,30.0,0);
T_sp_distribution(PerSalt,PerPepper,&amp;Dist);
T_add_noise_distribution(Image,&amp;ImageNoise,Dist);
disp_image(ImageNoise,WindowHandle);
</pre>
</div>
<div data-if="cpp" style="display:none">
<h2 id="sec_example_cpp">例程 (HDevelop)</h2>
<pre class="example">
read_image(Image,'mreut')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
</pre>
</div>
<div data-if="com" style="display:none">
<h2 id="sec_example_com">例程 (HDevelop)</h2>
<pre class="example">
read_image(Image,'mreut')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
</pre>
</div>
<div data-if="dotnet" style="display:none">
<h2 id="sec_example_dotnet">例程 (HDevelop)</h2>
<pre class="example">
read_image(Image,'mreut')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
</pre>
</div>
<h2 id="sec_result">结果</h2>
<p><code><span data-if="hdevelop" style="display:inline">add_noise_distribution</span><span data-if="c" style="display:none">add_noise_distribution</span><span data-if="cpp" style="display:none">AddNoiseDistribution</span><span data-if="com" style="display:none">AddNoiseDistribution</span><span data-if="dotnet" style="display:none">AddNoiseDistribution</span><span data-if="python" style="display:none">add_noise_distribution</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
     if all parameters are correct.
If the input is empty the behavior can be set via
<a href="set_system.html"><code><span data-if="hdevelop" style="display:inline">set_system('no_object_result',&lt;Result&gt;)</span><span data-if="c" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span><span data-if="cpp" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="com" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="dotnet" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="python" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span></code></a>.  If
necessary, an exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="gauss_distribution.html"><span data-if="hdevelop" style="display:inline">gauss_distribution</span><span data-if="c" style="display:none">gauss_distribution</span><span data-if="cpp" style="display:none">GaussDistribution</span><span data-if="com" style="display:none">GaussDistribution</span><span data-if="dotnet" style="display:none">GaussDistribution</span><span data-if="python" style="display:none">gauss_distribution</span></a></code>, 
<code><a href="sp_distribution.html"><span data-if="hdevelop" style="display:inline">sp_distribution</span><span data-if="c" style="display:none">sp_distribution</span><span data-if="cpp" style="display:none">SpDistribution</span><span data-if="com" style="display:none">SpDistribution</span><span data-if="dotnet" style="display:none">SpDistribution</span><span data-if="python" style="display:none">sp_distribution</span></a></code>, 
<code><a href="noise_distribution_mean.html"><span data-if="hdevelop" style="display:inline">noise_distribution_mean</span><span data-if="c" style="display:none">noise_distribution_mean</span><span data-if="cpp" style="display:none">NoiseDistributionMean</span><span data-if="com" style="display:none">NoiseDistributionMean</span><span data-if="dotnet" style="display:none">NoiseDistributionMean</span><span data-if="python" style="display:none">noise_distribution_mean</span></a></code>
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="add_noise_white.html"><span data-if="hdevelop" style="display:inline">add_noise_white</span><span data-if="c" style="display:none">add_noise_white</span><span data-if="cpp" style="display:none">AddNoiseWhite</span><span data-if="com" style="display:none">AddNoiseWhite</span><span data-if="dotnet" style="display:none">AddNoiseWhite</span><span data-if="python" style="display:none">add_noise_white</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="sp_distribution.html"><span data-if="hdevelop" style="display:inline">sp_distribution</span><span data-if="c" style="display:none">sp_distribution</span><span data-if="cpp" style="display:none">SpDistribution</span><span data-if="com" style="display:none">SpDistribution</span><span data-if="dotnet" style="display:none">SpDistribution</span><span data-if="python" style="display:none">sp_distribution</span></a></code>, 
<code><a href="gauss_distribution.html"><span data-if="hdevelop" style="display:inline">gauss_distribution</span><span data-if="c" style="display:none">gauss_distribution</span><span data-if="cpp" style="display:none">GaussDistribution</span><span data-if="com" style="display:none">GaussDistribution</span><span data-if="dotnet" style="display:none">GaussDistribution</span><span data-if="python" style="display:none">gauss_distribution</span></a></code>, 
<code><a href="noise_distribution_mean.html"><span data-if="hdevelop" style="display:inline">noise_distribution_mean</span><span data-if="c" style="display:none">noise_distribution_mean</span><span data-if="cpp" style="display:none">NoiseDistributionMean</span><span data-if="com" style="display:none">NoiseDistributionMean</span><span data-if="dotnet" style="display:none">NoiseDistributionMean</span><span data-if="python" style="display:none">noise_distribution_mean</span></a></code>, 
<code><a href="add_noise_white.html"><span data-if="hdevelop" style="display:inline">add_noise_white</span><span data-if="c" style="display:none">add_noise_white</span><span data-if="cpp" style="display:none">AddNoiseWhite</span><span data-if="com" style="display:none">AddNoiseWhite</span><span data-if="dotnet" style="display:none">AddNoiseWhite</span><span data-if="python" style="display:none">add_noise_white</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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